body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.hc-head {
    height: 60px;
}

.hc-body {
    flex: 1;
    background-color: #27272f;
}

.hc_block1 {
    padding: 0.5rem 0 0.8rem;
    background-color: #27272f;
}

.hc_block1_main {
    display: flex;
    justify-content: center;
}

.hc_block1_menu {
    width: 100%;
    height: 5.04rem;
    padding-left: 0.25rem;
    background-color: #1F1F1F;
}

.hc_block1_title {
    display: flex;
    align-items: center;
    height: 1.14rem;
    border-bottom: 1px solid #333;
    padding-left: 0.18rem;
    padding-right: 0.14rem;
}

.hc_block1_title h2 {
    font-size: 0.18rem;
    font-weight: 400;
    color: #FFFFFF;
    line-height: 24px;
}

/* 目录 */
.hc_block1_catalogue {
    padding-top: 0.15rem;
    height: 3.9rem;
    overflow: auto;
}

.hc_block1_catalogue::-webkit-scrollbar {
    /*滚动条整体样式*/
    width: 5px;
    /*高宽分别对应横竖滚动条的尺寸*/
}

.hc_block1_catalogue::-webkit-scrollbar-thumb {
    /*滚动条里面小方块*/
    width: 5px;
    background: #424242;
    border-radius: 5px;
}

.hc_block1_catalogue::-webkit-scrollbar-track {
    /*滚动条里面轨道*/
    background: #191919;
}

.hc_block1_item {
    margin: 8px 0;
    padding-left: 0.18rem;
    padding-right: 0.14rem;
}

.hc_block1_desc {
    display: flex;
    padding: 10px 0;
}

.hc_block1_item.active .hc_block1_desc span {
    color: #2468F2;
}

.hc_block1_desc span {
    font-size: 0.16rem;
    color: #FFFFFF;
    line-height: 24px;
    letter-spacing: 1px;
}

.hc_block1_desc .xh {
    white-space: nowrap;
}

.hc_block1_desc .ml {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    /* 设置n行，也包括1 */
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.hc_block1_classify {
    /* padding-top: 0.5rem; */
    margin-bottom: 0.2rem;
}

.hc_block1_classify h2 {
    font-size: 0.24rem;
    font-weight: 400;
    color: #FFFFFF;
    line-height: 24px;
    margin-bottom: 0.2rem;
}

.hc_block1_fbt {
    display: flex;
    align-items: flex-end;
    margin-bottom: 0.2rem;
}

.hc_block1_fbt h4 {
    font-size: 0.20rem;
    color: #FFFFFF;
    margin-right: 0.1rem;
    /* margin-bottom: 0.1rem; */
}

.hc_block1_fbt p {
    font-size: 0.16rem;
    color: #E3E3E3;
}

.hc_block1_classify>p {
    font-size: 0.14rem;
    font-weight: 400;
    color: #E3E3E3;
}

.hc_block1_video {
    position: relative;
    padding: 1px;
}

.videoCls {
    width: 8.96rem;
    height: 5.04rem;
}

/* 遮罩层 */
.v_dialog {
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    z-index: 9;
    background-color: rgba(000, 000, 000, .99);
    display: none;
}

.v_dialog_docs {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.v_dialog_title {
    font-size: 0.2rem;
    color: #e6e6e6;
}

.v_dialog_desc {
    font-size: 0.16rem;
    margin-top: 0.2rem;
    color: #808080;
}

.v_dialog_btn {
    background-image: linear-gradient(90deg, #f7e1c1, #e6b673);
    color: rgba(0, 0, 0, .9);
    align-items: center;
    border-radius: 4px;
    display: flex;
    -ms-flex-direction: column;
    flex-direction: column;
    height: 0.4rem;
    min-height: 28px;
    justify-content: center;
    width: 2rem;
    min-width: 120px;
    margin-top: 0.26rem;
}

.v_dialog_btn:hover {
    background-image: linear-gradient(90deg, #f9e8cf, #e8bd80);
    color: rgba(8, 8, 8, .9);
}


@media (max-width:992px) {
    .hc_block1_main {
        flex-direction: column;
    }

    .hc_block1_classify {
        margin-bottom: 20px;
    }

    .videoCls {
        width: 100%;
        height: auto;
    }

    .hc_block1_menu {
        width: 100%;
        height: 300px;
    }

    .hc_block1_title {
        height: 68px;
    }

    .hc_block1_catalogue {
        height: 232px;
    }

    .hc_block1_fbt {
        flex-direction: column;
        align-items: flex-start;
        margin-bottom: 15px;
    }

    .hc_block1_classify h2 {
        font-size: 18px;
        margin-bottom: 15px;
    }

    .hc_block1_fbt h4 {
        margin-bottom: 5px;
    }

    .hc_block1_fbt h4, .hc_block1_title h2 {
        font-size: 16px;
    }

    .hc_block1_fbt p, .hc_block1_desc span {
        line-height: 24px;
        font-size: 14px;
    }
}